The last prolonged run of excessive heat of the summer matched the late July one for both temperatures and relative humidity levels. High temperatures on the 13th and 14th (the two hottest days) reached well into the 90s and afternoon heat indices those two days reached as high as 105 to 110 degrees around the greater Philadelphia Metropolitan area. Many utilities set weekend usage records (the two hottest days were on Saturday the 13th and Sunday the 14th). PECO Energy's record weekend energy usage of 7,856 megawatts blasted the previous record of 7,202 megawatts set in August of 2002. Pennsylvania Power and Light asked industrial customers to reduce electricity consumption. This was the sixth time this summer that Montgomery County issued a code red because of the heat. The heat also caused two more deaths within the city of Philadelphia. The excessive heat also led to three patrons attending the Musikfest in Bethlehem (Northampton County) to be treated for heat exhaustion. The excessive heat ended as a strong cold front moved through Eastern Pennsylvania during the night of the 14th. Highest temperatures during the current hot spell included 98 degrees in Perkasie (Bucks County), Easton (Northampton County), Valley Forge and West Chester (Chester County), 97 degrees at both the Philadelphia International Airport and the Lehigh Valley International Airport as well as in Reading (Berks County), 96 degrees in Neshaminy Falls (Bucks County), Coatesville (Chester County), Springtown (Bucks County) and Pottstown (Montgomery County), 95 degrees in Lancaster (Lancaster County) and Hamburg (Berks County) and 94 degrees in Willow Grove (Montgomery County)The unseasonably hot start to the first half of August helped cement it as not only as one of the ten warmest Augusts on record, but also one of the ten hottest summers on record. At the Philadelphia International Airport, the August monthly mean temperature of 79.6 degrees was the fourth warmest August on record and the summer average temperature of 77.8 degrees was the fifth warmest summer on record. At the Lehigh Valley International Airport, the August monthly mean temperature of 75.5 degrees tied 1983 as the 3rd warmest August on record and the summer average temperature of 74.6 degrees was the second warmest summer on record. Statewide in Pennsylvania, results were similar. On a statewide average, it was 9th warmest August on record and the third warmest summer on record.

Heat in BUCKS, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in CHESTER, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in DELAWARE, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in LEHIGH, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in MONTGOMERY, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in NORTHAMPTON, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in PHILADELPHIA, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in BERKS, PENNSYLVANIA
From 11-AUG-05 09:00:00 to 14-AUG-05 20:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC